gitzel



ber 1'7 it is obvious that the elecrode l muy be a continuation of the electrode 8, in which event the bend in the latter* will be. provided with a suitable and., prefeyiibly platinum sparking point; i.

Having thilsdeseribed my invention what desire to seeuie by Letters Patent is:

In a spark plug, a body of insulating infiterizil having a longitudinal opening, a rnetallio member for Support-ing said body, a casing of eonducting material inolosing :i portion of said body and insulazed from said support, said Casing having Wimlows therein, 'a perforated member of conducting inalierial secured to said support, a, movable elecfrode supported b v Suid pei-formed member, :in electrode 'rod in lwill longilmliiizil olivi ing7 :i coupling membeil ol vomlilwliiij; mulo .rial beliveen said ele -t1' le-i z l :xml .-`:\i l movable 'eleci'ode lizii'ingj :i sparking imim in proximity lo Huid movable eloelmli" :xml Secondary eleei'mles5 one ol` elle ximo boing coimocl'ell to saiiil Coupling;` member` llio ii mary electrodes r i1iipii fiiig :11ml elem-lili 1'o l :1n(l movable electrode nml weomlniv electrodes? being :ulnplwl lo be siilijei-ml zo 'engim' comprension :xml ziiiiospliei'ie luv 

